I've installed the latest version of WordPress and going to create the eCommerce site. So the engine is Jigoshop. Please, do visit the dev site on http://prostoydezign.org.ua
There you will see the 4 graphical menu items, I've downloaded some plugin for menu that supports graphics.
So next if you click on "Shop" or "Mosaics", because on Mosaics will go to the core and investigate my menu ^_^. So if you click on Mosaics you will see that the table layout is broken, the left sidebar is repeated twicely in the LeftNav and Main Content Area. And as for Ceramics - everything is fine (the layout is not broken). Strange. So if someone can help me with fixing the layout, I'll tell how to customize such graphical menu. The icons for it (and the GUI design in whole) was developed for customer, but I've got plenty of time to discuss the problem.
Thanks a lot, Alex